<template>
  <!-- 1.为Echarts准备一个具备大小（宽高）的DOM -->
  <div ref="main" style="width: 600px;height:400px;"></div>
</template>

<script>
  //2.加载echarts
  import * as echarts from 'echarts'
  //如果使用百度地图的图表，
  //1.加载百度地图的JavaScript SDK脚本文件
  //2.加载echarts百度地图的扩展
  import 'echarts/dist/extension/bmap';
  export default {
    // 组件名称
    name: 'MapDemo',
    // 组件参数 接收来自父组件的数据
    props: {},
    // 局部注册的组件
    components: {},
    // 组件状态值
    data() {
      return {}
    },
    // 计算属性
    computed: {},
    // 侦听器
    watch: {},
    created() {},
    mounted() {
      //3.初始化图表
      var myChart = echarts.init(this.$refs.main);
      //4. 指定图表的配置项和数据
      var data = [{
          name: '海门',
          value: 9
        },
        {
          name: '鄂尔多斯',
          value: 12
        },
        {
          name: '招远',
          value: 12
        },
        {
          name: '舟山',
          value: 12
        },
        {
          name: '齐齐哈尔',
          value: 14
        },
        {
          name: '盐城',
          value: 15
        },
        {
          name: '赤峰',
          value: 16
        },
        {
          name: '青岛',
          value: 18
        },
        {
          name: '乳山',
          value: 18
        },
        {
          name: '金昌',
          value: 19
        },
        {
          name: '泉州',
          value: 21
        },
        {
          name: '莱西',
          value: 21
        },
        {
          name: '日照',
          value: 21
        },
        {
          name: '胶南',
          value: 22
        },
        {
          name: '南通',
          value: 23
        },
        {
          name: '拉萨',
          value: 24
        },
        {
          name: '云浮',
          value: 24
        },
        {
          name: '梅州',
          value: 25
        },
        {
          name: '文登',
          value: 25
        },
        {
          name: '上海',
          value: 25
        },
        {
          name: '攀枝花',
          value: 25
        },
        {
          name: '威海',
          value: 25
        },
        {
          name: '承德',
          value: 25
        },
        {
          name: '厦门',
          value: 26
        },
        {
          name: '汕尾',
          value: 26
        },
        {
          name: '潮州',
          value: 26
        },
        {
          name: '丹东',
          value: 27
        },
        {
          name: '太仓',
          value: 27
        },
        {
          name: '曲靖',
          value: 27
        },
        {
          name: '烟台',
          value: 28
        },
        {
          name: '福州',
          value: 29
        },
        {
          name: '瓦房店',
          value: 30
        },
        {
          name: '即墨',
          value: 30
        },
        {
          name: '抚顺',
          value: 31
        },
        {
          name: '玉溪',
          value: 31
        },
        {
          name: '张家口',
          value: 31
        },
        {
          name: '阳泉',
          value: 31
        },
        {
          name: '莱州',
          value: 32
        },
        {
          name: '湖州',
          value: 32
        },
        {
          name: '汕头',
          value: 32
        },
        {
          name: '昆山',
          value: 33
        },
        {
          name: '宁波',
          value: 33
        },
        {
          name: '湛江',
          value: 33
        },
        {
          name: '揭阳',
          value: 34
        },
        {
          name: '荣成',
          value: 34
        },
        {
          name: '连云港',
          value: 35
        },
        {
          name: '葫芦岛',
          value: 35
        },
        {
          name: '常熟',
          value: 36
        },
        {
          name: '东莞',
          value: 36
        },
        {
          name: '河源',
          value: 36
        },
        {
          name: '淮安',
          value: 36
        },
        {
          name: '泰州',
          value: 36
        },
        {
          name: '南宁',
          value: 37
        },
        {
          name: '营口',
          value: 37
        },
        {
          name: '惠州',
          value: 37
        },
        {
          name: '江阴',
          value: 37
        },
        {
          name: '蓬莱',
          value: 37
        },
        {
          name: '韶关',
          value: 38
        },
        {
          name: '嘉峪关',
          value: 38
        },
        {
          name: '广州',
          value: 38
        },
        {
          name: '延安',
          value: 38
        },
        {
          name: '太原',
          value: 39
        },
        {
          name: '清远',
          value: 39
        },
        {
          name: '中山',
          value: 39
        },
        {
          name: '昆明',
          value: 39
        },
        {
          name: '寿光',
          value: 40
        },
        {
          name: '盘锦',
          value: 40
        },
        {
          name: '长治',
          value: 41
        },
        {
          name: '深圳',
          value: 41
        },
        {
          name: '珠海',
          value: 42
        },
        {
          name: '宿迁',
          value: 43
        },
        {
          name: '咸阳',
          value: 43
        },
        {
          name: '铜川',
          value: 44
        },
        {
          name: '平度',
          value: 44
        },
        {
          name: '佛山',
          value: 44
        },
        {
          name: '海口',
          value: 44
        },
        {
          name: '江门',
          value: 45
        },
        {
          name: '章丘',
          value: 45
        },
        {
          name: '肇庆',
          value: 46
        },
        {
          name: '大连',
          value: 47
        },
        {
          name: '临汾',
          value: 47
        },
        {
          name: '吴江',
          value: 47
        },
        {
          name: '石嘴山',
          value: 49
        },
        {
          name: '沈阳',
          value: 50
        },
        {
          name: '苏州',
          value: 50
        },
        {
          name: '茂名',
          value: 50
        },
        {
          name: '嘉兴',
          value: 51
        },
        {
          name: '长春',
          value: 51
        },
        {
          name: '胶州',
          value: 52
        },
        {
          name: '银川',
          value: 52
        },
        {
          name: '张家港',
          value: 52
        },
        {
          name: '三门峡',
          value: 53
        },
        {
          name: '锦州',
          value: 54
        },
        {
          name: '南昌',
          value: 54
        },
        {
          name: '柳州',
          value: 54
        },
        {
          name: '三亚',
          value: 54
        },
        {
          name: '自贡',
          value: 56
        },
        {
          name: '吉林',
          value: 56
        },
        {
          name: '阳江',
          value: 57
        },
        {
          name: '泸州',
          value: 57
        },
        {
          name: '西宁',
          value: 57
        },
        {
          name: '宜宾',
          value: 58
        },
        {
          name: '呼和浩特',
          value: 58
        },
        {
          name: '成都',
          value: 58
        },
        {
          name: '大同',
          value: 58
        },
        {
          name: '镇江',
          value: 59
        },
        {
          name: '桂林',
          value: 59
        },
        {
          name: '张家界',
          value: 59
        },
        {
          name: '宜兴',
          value: 59
        },
        {
          name: '北海',
          value: 60
        },
        {
          name: '西安',
          value: 61
        },
        {
          name: '金坛',
          value: 62
        },
        {
          name: '东营',
          value: 62
        },
        {
          name: '牡丹江',
          value: 63
        },
        {
          name: '遵义',
          value: 63
        },
        {
          name: '绍兴',
          value: 63
        },
        {
          name: '扬州',
          value: 64
        },
        {
          name: '常州',
          value: 64
        },
        {
          name: '潍坊',
          value: 65
        },
        {
          name: '重庆',
          value: 66
        },
        {
          name: '台州',
          value: 67
        },
        {
          name: '南京',
          value: 67
        },
        {
          name: '滨州',
          value: 70
        },
        {
          name: '贵阳',
          value: 71
        },
        {
          name: '无锡',
          value: 71
        },
        {
          name: '本溪',
          value: 71
        },
        {
          name: '克拉玛依',
          value: 72
        },
        {
          name: '渭南',
          value: 72
        },
        {
          name: '马鞍山',
          value: 72
        },
        {
          name: '宝鸡',
          value: 72
        },
        {
          name: '焦作',
          value: 75
        },
        {
          name: '句容',
          value: 75
        },
        {
          name: '北京',
          value: 79
        },
        {
          name: '徐州',
          value: 79
        },
        {
          name: '衡水',
          value: 80
        },
        {
          name: '包头',
          value: 80
        },
        {
          name: '绵阳',
          value: 80
        },
        {
          name: '乌鲁木齐',
          value: 84
        },
        {
          name: '枣庄',
          value: 84
        },
        {
          name: '杭州',
          value: 84
        },
        {
          name: '淄博',
          value: 85
        },
        {
          name: '鞍山',
          value: 86
        },
        {
          name: '溧阳',
          value: 86
        },
        {
          name: '库尔勒',
          value: 86
        },
        {
          name: '安阳',
          value: 90
        },
        {
          name: '开封',
          value: 90
        },
        {
          name: '济南',
          value: 92
        },
        {
          name: '德阳',
          value: 93
        },
        {
          name: '温州',
          value: 95
        },
        {
          name: '九江',
          value: 96
        },
        {
          name: '邯郸',
          value: 98
        },
        {
          name: '临安',
          value: 99
        },
        {
          name: '兰州',
          value: 99
        },
        {
          name: '沧州',
          value: 100
        },
        {
          name: '临沂',
          value: 103
        },
        {
          name: '南充',
          value: 104
        },
        {
          name: '天津',
          value: 105
        },
        {
          name: '富阳',
          value: 106
        },
        {
          name: '泰安',
          value: 112
        },
        {
          name: '诸暨',
          value: 112
        },
        {
          name: '郑州',
          value: 113
        },
        {
          name: '哈尔滨',
          value: 114
        },
        {
          name: '聊城',
          value: 116
        },
        {
          name: '芜湖',
          value: 117
        },
        {
          name: '唐山',
          value: 119
        },
        {
          name: '平顶山',
          value: 119
        },
        {
          name: '邢台',
          value: 119
        },
        {
          name: '德州',
          value: 120
        },
        {
          name: '济宁',
          value: 120
        },
        {
          name: '荆州',
          value: 127
        },
        {
          name: '宜昌',
          value: 130
        },
        {
          name: '义乌',
          value: 132
        },
        {
          name: '丽水',
          value: 133
        },
        {
          name: '洛阳',
          value: 134
        },
        {
          name: '秦皇岛',
          value: 136
        },
        {
          name: '株洲',
          value: 143
        },
        {
          name: '石家庄',
          value: 147
        },
        {
          name: '莱芜',
          value: 148
        },
        {
          name: '常德',
          value: 152
        },
        {
          name: '保定',
          value: 153
        },
        {
          name: '湘潭',
          value: 154
        },
        {
          name: '金华',
          value: 157
        },
        {
          name: '岳阳',
          value: 169
        },
        {
          name: '长沙',
          value: 175
        },
        {
          name: '衢州',
          value: 177
        },
        {
          name: '廊坊',
          value: 193
        },
        {
          name: '菏泽',
          value: 194
        },
        {
          name: '合肥',
          value: 229
        },
        {
          name: '武汉',
          value: 273
        },
        {
          name: '大庆',
          value: 279
        }
      ];
      var geoCoordMap = {
        '海门': [121.15, 31.89],
        '鄂尔多斯': [109.781327, 39.608266],
        '招远': [120.38, 37.35],
        '舟山': [122.207216, 29.985295],
        '齐齐哈尔': [123.97, 47.33],
        '盐城': [120.13, 33.38],
        '赤峰': [118.87, 42.28],
        '青岛': [120.33, 36.07],
        '乳山': [121.52, 36.89],
        '金昌': [102.188043, 38.520089],
        '泉州': [118.58, 24.93],
        '莱西': [120.53, 36.86],
        '日照': [119.46, 35.42],
        '胶南': [119.97, 35.88],
        '南通': [121.05, 32.08],
        '拉萨': [91.11, 29.97],
        '云浮': [112.02, 22.93],
        '梅州': [116.1, 24.55],
        '文登': [122.05, 37.2],
        '上海': [121.48, 31.22],
        '攀枝花': [101.718637, 26.582347],
        '威海': [122.1, 37.5],
        '承德': [117.93, 40.97],
        '厦门': [118.1, 24.46],
        '汕尾': [115.375279, 22.786211],
        '潮州': [116.63, 23.68],
        '丹东': [124.37, 40.13],
        '太仓': [121.1, 31.45],
        '曲靖': [103.79, 25.51],
        '烟台': [121.39, 37.52],
        '福州': [119.3, 26.08],
        '瓦房店': [121.979603, 39.627114],
        '即墨': [120.45, 36.38],
        '抚顺': [123.97, 41.97],
        '玉溪': [102.52, 24.35],
        '张家口': [114.87, 40.82],
        '阳泉': [113.57, 37.85],
        '莱州': [119.942327, 37.177017],
        '湖州': [120.1, 30.86],
        '汕头': [116.69, 23.39],
        '昆山': [120.95, 31.39],
        '宁波': [121.56, 29.86],
        '湛江': [110.359377, 21.270708],
        '揭阳': [116.35, 23.55],
        '荣成': [122.41, 37.16],
        '连云港': [119.16, 34.59],
        '葫芦岛': [120.836932, 40.711052],
        '常熟': [120.74, 31.64],
        '东莞': [113.75, 23.04],
        '河源': [114.68, 23.73],
        '淮安': [119.15, 33.5],
        '泰州': [119.9, 32.49],
        '南宁': [108.33, 22.84],
        '营口': [122.18, 40.65],
        '惠州': [114.4, 23.09],
        '江阴': [120.26, 31.91],
        '蓬莱': [120.75, 37.8],
        '韶关': [113.62, 24.84],
        '嘉峪关': [98.289152, 39.77313],
        '广州': [113.23, 23.16],
        '延安': [109.47, 36.6],
        '太原': [112.53, 37.87],
        '清远': [113.01, 23.7],
        '中山': [113.38, 22.52],
        '昆明': [102.73, 25.04],
        '寿光': [118.73, 36.86],
        '盘锦': [122.070714, 41.119997],
        '长治': [113.08, 36.18],
        '深圳': [114.07, 22.62],
        '珠海': [113.52, 22.3],
        '宿迁': [118.3, 33.96],
        '咸阳': [108.72, 34.36],
        '铜川': [109.11, 35.09],
        '平度': [119.97, 36.77],
        '佛山': [113.11, 23.05],
        '海口': [110.35, 20.02],
        '江门': [113.06, 22.61],
        '章丘': [117.53, 36.72],
        '肇庆': [112.44, 23.05],
        '大连': [121.62, 38.92],
        '临汾': [111.5, 36.08],
        '吴江': [120.63, 31.16],
        '石嘴山': [106.39, 39.04],
        '沈阳': [123.38, 41.8],
        '苏州': [120.62, 31.32],
        '茂名': [110.88, 21.68],
        '嘉兴': [120.76, 30.77],
        '长春': [125.35, 43.88],
        '胶州': [120.03336, 36.264622],
        '银川': [106.27, 38.47],
        '张家港': [120.555821, 31.875428],
        '三门峡': [111.19, 34.76],
        '锦州': [121.15, 41.13],
        '南昌': [115.89, 28.68],
        '柳州': [109.4, 24.33],
        '三亚': [109.511909, 18.252847],
        '自贡': [104.778442, 29.33903],
        '吉林': [126.57, 43.87],
        '阳江': [111.95, 21.85],
        '泸州': [105.39, 28.91],
        '西宁': [101.74, 36.56],
        '宜宾': [104.56, 29.77],
        '呼和浩特': [111.65, 40.82],
        '成都': [104.06, 30.67],
        '大同': [113.3, 40.12],
        '镇江': [119.44, 32.2],
        '桂林': [110.28, 25.29],
        '张家界': [110.479191, 29.117096],
        '宜兴': [119.82, 31.36],
        '北海': [109.12, 21.49],
        '西安': [108.95, 34.27],
        '金坛': [119.56, 31.74],
        '东营': [118.49, 37.46],
        '牡丹江': [129.58, 44.6],
        '遵义': [106.9, 27.7],
        '绍兴': [120.58, 30.01],
        '扬州': [119.42, 32.39],
        '常州': [119.95, 31.79],
        '潍坊': [119.1, 36.62],
        '重庆': [106.54, 29.59],
        '台州': [121.420757, 28.656386],
        '南京': [118.78, 32.04],
        '滨州': [118.03, 37.36],
        '贵阳': [106.71, 26.57],
        '无锡': [120.29, 31.59],
        '本溪': [123.73, 41.3],
        '克拉玛依': [84.77, 45.59],
        '渭南': [109.5, 34.52],
        '马鞍山': [118.48, 31.56],
        '宝鸡': [107.15, 34.38],
        '焦作': [113.21, 35.24],
        '句容': [119.16, 31.95],
        '北京': [116.46, 39.92],
        '徐州': [117.2, 34.26],
        '衡水': [115.72, 37.72],
        '包头': [110, 40.58],
        '绵阳': [104.73, 31.48],
        '乌鲁木齐': [87.68, 43.77],
        '枣庄': [117.57, 34.86],
        '杭州': [120.19, 30.26],
        '淄博': [118.05, 36.78],
        '鞍山': [122.85, 41.12],
        '溧阳': [119.48, 31.43],
        '库尔勒': [86.06, 41.68],
        '安阳': [114.35, 36.1],
        '开封': [114.35, 34.79],
        '济南': [117, 36.65],
        '德阳': [104.37, 31.13],
        '温州': [120.65, 28.01],
        '九江': [115.97, 29.71],
        '邯郸': [114.47, 36.6],
        '临安': [119.72, 30.23],
        '兰州': [103.73, 36.03],
        '沧州': [116.83, 38.33],
        '临沂': [118.35, 35.05],
        '南充': [106.110698, 30.837793],
        '天津': [117.2, 39.13],
        '富阳': [119.95, 30.07],
        '泰安': [117.13, 36.18],
        '诸暨': [120.23, 29.71],
        '郑州': [113.65, 34.76],
        '哈尔滨': [126.63, 45.75],
        '聊城': [115.97, 36.45],
        '芜湖': [118.38, 31.33],
        '唐山': [118.02, 39.63],
        '平顶山': [113.29, 33.75],
        '邢台': [114.48, 37.05],
        '德州': [116.29, 37.45],
        '济宁': [116.59, 35.38],
        '荆州': [112.239741, 30.335165],
        '宜昌': [111.3, 30.7],
        '义乌': [120.06, 29.32],
        '丽水': [119.92, 28.45],
        '洛阳': [112.44, 34.7],
        '秦皇岛': [119.57, 39.95],
        '株洲': [113.16, 27.83],
        '石家庄': [114.48, 38.03],
        '莱芜': [117.67, 36.19],
        '常德': [111.69, 29.05],
        '保定': [115.48, 38.85],
        '湘潭': [112.91, 27.87],
        '金华': [119.64, 29.12],
        '岳阳': [113.09, 29.37],
        '长沙': [113, 28.21],
        '衢州': [118.88, 28.97],
        '廊坊': [116.7, 39.53],
        '菏泽': [115.480656, 35.23375],
        '合肥': [117.27, 31.86],
        '武汉': [114.31, 30.52],
        '大庆': [125.03, 46.58]
      };

      var convertData = function (data) {
        var res = [];
        for (var i = 0; i < data.length; i++) {
          var geoCoord = geoCoordMap[data[i].name];
          if (geoCoord) {
            res.push({
              name: data[i].name,
              value: geoCoord.concat(data[i].value)
            });
          }
        }
        return res;
      };

      var option = {
        title: {
          text: '全国主要城市空气质量 - 百度地图',
          subtext: 'data from PM25.in',
          sublink: 'http://www.pm25.in',
          left: 'center'
        },
        tooltip: {
          trigger: 'item'
        },
        bmap: {
          center: [104.114129, 37.550339],
          zoom: 5,
          roam: true,
          mapStyle: {
            styleJson: [{
              'featureType': 'water',
              'elementType': 'all',
              'stylers': {
                'color': '#d1d1d1'
              }
            }, {
              'featureType': 'land',
              'elementType': 'all',
              'stylers': {
                'color': '#f3f3f3'
              }
            }, {
              'featureType': 'railway',
              'elementType': 'all',
              'stylers': {
                'visibility': 'off'
              }
            }, {
              'featureType': 'highway',
              'elementType': 'all',
              'stylers': {
                'color': '#fdfdfd'
              }
            }, {
              'featureType': 'highway',
              'elementType': 'labels',
              'stylers': {
                'visibility': 'off'
              }
            }, {
              'featureType': 'arterial',
              'elementType': 'geometry',
              'stylers': {
                'color': '#fefefe'
              }
            }, {
              'featureType': 'arterial',
              'elementType': 'geometry.fill',
              'stylers': {
                'color': '#fefefe'
              }
            }, {
              'featureType': 'poi',
              'elementType': 'all',
              'stylers': {
                'visibility': 'off'
              }
            }, {
              'featureType': 'green',
              'elementType': 'all',
              'stylers': {
                'visibility': 'off'
              }
            }, {
              'featureType': 'subway',
              'elementType': 'all',
              'stylers': {
                'visibility': 'off'
              }
            }, {
              'featureType': 'manmade',
              'elementType': 'all',
              'stylers': {
                'color': '#d1d1d1'
              }
            }, {
              'featureType': 'local',
              'elementType': 'all',
              'stylers': {
                'color': '#d1d1d1'
              }
            }, {
              'featureType': 'arterial',
              'elementType': 'labels',
              'stylers': {
                'visibility': 'off'
              }
            }, {
              'featureType': 'boundary',
              'elementType': 'all',
              'stylers': {
                'color': '#fefefe'
              }
            }, {
              'featureType': 'building',
              'elementType': 'all',
              'stylers': {
                'color': '#d1d1d1'
              }
            }, {
              'featureType': 'label',
              'elementType': 'labels.text.fill',
              'stylers': {
                'color': '#999999'
              }
            }]
          }
        },
        series: [{
            name: 'pm2.5',
            type: 'scatter',
            coordinateSystem: 'bmap',
            data: convertData(data),
            symbolSize: function (val) {
              return val[2] / 10;
            },
            encode: {
              value: 2
            },
            label: {
              formatter: '{b}',
              position: 'right',
              show: false
            },
            emphasis: {
              label: {
                show: true
              }
            }
          },
          {
            name: 'Top 5',
            type: 'effectScatter',
            coordinateSystem: 'bmap',
            data: convertData(data.sort(function (a, b) {
              return b.value - a.value;
            }).slice(0, 6)),
            symbolSize: function (val) {
              return val[2] / 10;
            },
            encode: {
              value: 2
            },
            showEffectOn: 'render',
            rippleEffect: {
              brushType: 'stroke'
            },
            hoverAnimation: true,
            label: {
              formatter: '{b}',
              position: 'right',
              show: true
            },
            itemStyle: {
              shadowBlur: 10,
              shadowColor: '#333'
            },
            zlevel: 1
          }
        ]
      };
      // 5.使用刚指定的配置项和数据显示图表。
      myChart.setOption(option);
    },
    // 组件方法
    methods: {},
  }

</script>

<style scoped lang='less'>

</style>
